Tags

Inline CSS

Automatically inline all CSS styles provided in the message HTML - only for HTML documents less than 256KB in size

$message->getHeaders()->addTextHeader('X-MC-InlineCSS', true);

List Unsubscribe

Mandrill automatically adds a List-Unsubscribe header to all emails that include a Mandrill-generated unsubscribe link. If recipients use an email program that supports the List-Unsubscribe header (like Hotmail, AOL, or Yahoo), they can use the option in their email program to unsubscribe.